#include <iostream>
#include <fstream>
#include <set>
#include <vector>
using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
vector <int > ist;

int n,a[100],k;
int main()
{
    multiset <int> my_set ;
    fin>>n;
    int x;
    for(int i=0; i<n; i++)
    {
        fin>>x;
        if(x==1)
        {
            fin>>x;
            my_set.insert(x);
            ist.push_back(x);
        }
        else if(x==2)
        {
            fin>>x;
            my_set.erase(ist[x-1]);
        }
        else
            fout<<*my_set.begin()<<endl;


    }
    return 0;
}